html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background-image: url('../pic/back.jpg');
    background-size: 100% 100%;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.container-login {
    margin: 240px auto;
    width: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-dialog {
    width: 400px;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid gray;
    background-color: white;
}

.login-dialog h3 {
    text-align: center;
}

.login-dialog .row {
    width: 100%;
    height: 50px;
    margin: 10px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.login-dialog .row > input {
    flex-grow: 1;
    margin-left: 10px;
    height: 35px;
    border: 1px solid gray;
    border-radius: 5px;
    outline: none;
    padding-left: 10px;
}

.captcha-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.captcha-row .captcha-img {
    height: 40px;
    border: 1px solid gray;
    cursor: pointer;
    margin-left: 10px;
    width: 100px;
}

.refresh-btn {
    font-size: 12px;
    margin-left: 10px; /* 设置按钮与图片之间的间距 */
    padding: 0;
    border: none; /* 去掉按钮的默认边框 */
    background: none; /* 去掉按钮背景 */
    color: #007bff; /* 设置字体颜色 */
    cursor: pointer; /* 鼠标悬停时显示为手型 */
    text-decoration: none; /* 去掉下划线 */
}

.login-dialog button {
    width: 100%;
    height: 40px;
    color: white;
    border: none;
}

.btn-secondary {
    margin-top: 10px;
}
